condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 0.0 0.0 0.0 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.007803874999999999 0.0 0.015607749999999998 Dark 0.07224666666666667 0.0 0.14449333333333333 Light 0.06708030769230769 0.06708030769230769 0.06708030769230769 Phloroglucinol 0.0 0.0 0.0